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1 answer:
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Answer: There are 4 students in the group.
Step-by-step explanation:
Let the number of students in the group be n
If one of them scored 9 more points , their average score would be 81 points.
So, our equation (1) will be
Similarly,
If one of them scored 3 points less, their average score would be 78 points.
So, our equation (2) will be
So, from equation (1) and (2) we get:
Hence, there are 4 students in the group.
Answer:
The measure of each angle must be =
Step-by-step explanation:
Regular Figure:
A figure where the measure of each angle is equal , is called a regular figure.
The given n- gon has n sides and n angles.
Now, here given the n - gon is a regular n - gon.
⇒ Each angle of the n-gon is equal in measure.
Hence, the measure of each angle must be =